Heya all, I can't figure this out, WinXP Pro with SP1 appllied, Nero 5.5.10.0, PIII 500 and a Diamond Data 40x32x10 burner, no matter what media I use or anything else that I try, I can't burn any faster than 16X. Any ideas?

Yup, only burning files from my HDD, HDD is a 7200rpm Seagate, Nero speedtest averages out at around 50X capable transfer rate, or there abouts. It's got me stumped. for those who know how to read it, here is the log file from Nero.

I have similar experience m8 but for mp3 to audio (hd and on the fly). I have a PIII 450MHz 128mb RAM and when I do a 'determine max speed' test run on nero (5.5.10)the max speed is approx 20x which is rounded down to 16x.

I guess this is because the old pc can't process the data fast enough.

I have a same problem when using spead measurement as well. My computer is pretty fast XP 1700+ with DDR333 and the HD is 7200rpm ATA133. My CDRW is 48x and the media is rated up to 40x. I noticed that I still can burn the CD successfully at 32x without any error when I turn off speed measurement. I still do NOT feel safe by turning it off though.

This is a problem with Nero, and not the computer. My solution was to leave Nero multiple letters (over time) regarding it, and after having been ignored for about a month (well, they did attempt ONE reply, but it was seriously lame, and only worsened the problem) I switched to only burning with Alcohol 120%, and using WinISO to make the images.

It a round about way of doing it, but at least I can feel secure in my burning!